Sphalerite and its depression optimal conditions by zinc sulphate

As a result of theoretical and experimental investigations it has been shown, that for preventing sphalerite activation by copper and lead ions, it is required to create practically the same concentration value of sulphur ions, which abruptly increases by raising the pH value of pulp liquid phase. Physico-chemical model derived can be used as the criteria for functional units of automation systems to control and regulate sulphuric sodium expenses. The depression selectivity action of zinc sulphate on sphalerite depends on the solubility and the maximal stability of hydroxide zinc dregs in pulp and on sphalerite surface. According to those conditions, consequently, a hydrophobic interaction is carried out between dregs and mineral oxidation product where the potential value of both products is near zero, and the crystalline corresponding characteristics of zinc salts and minerals.